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WSN node self-powered system

A technology of power supply system and node, applied in control/regulation system, regulation of electrical variables, collectors, etc., can solve the problems of lack of power management function, low utilization rate of solar energy, and large weather influence, and reduce the number of cycles of charging and discharging , The effect of long power supply time and low production cost

Pending Publication Date: 2019-09-06
GUILIN UNIVERSITY OF TECHNOLOGY
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AI Technical Summary

Problems solved by technology

[0003] In view of the above, it is necessary to provide a self-power supply system for WSN nodes, which is used to solve the problems of low solar energy utilization rate, strong weather influence and no power management function in the existing WSN node self-power supply system

Method used

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  • WSN node self-powered system

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Embodiment

[0049] Such as figure 1 As shown, a WSN node self-power supply system includes: a photovoltaic cell 1, an MPPT module 2, an energy management module 3, a step-down regulator module 4, a node module 5, a control module 6, and a communication module 7; wherein, the control module 6 It is a single-chip microcomputer control circuit, the model of the single-chip microcomputer is STM32F103C8T6, and the circuit diagram of the control module 6 is as follows Figure 4 As shown, the MCU is labeled U6 in the circuit diagram.

[0050] Such as figure 1 , 2 As shown, the MPPT module 2 includes a first detection circuit 21, a PWM disturbance generation circuit 22, and a buck circuit 23. The first detection circuit 21 is electrically connected to the output terminal of the photovoltaic cell 1, and the PWM disturbance generation circuit 22 is connected to the first detection circuit. The circuit 21 is electrically connected, and the step-down BUCK circuit 23 is electrically connected to th...

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Abstract

The invention discloses a WSN node self-powered system and belongs to the technical field of a wireless sensor. The system comprises a photovoltaic cell, an MPPT module, an energy management module, avoltage reducing and stabilizing module, a node module and a control module. The MPPT module comprises a first detection circuit, a PWM disturbance generation circuit and a BUCK circuit. The energy management module comprises a lithium battery, a super-capacitor, a second detection circuit, a third detection circuit, a first switch circuit, a second switch circuit and a third switch circuit. Thecontrol module combines with an MPPT algorithm and carries out maximum power point tracking on the photovoltaic cell through the PWM disturbance generation circuit; and the control module controls opening or closing of the first switch circuit, the second switch circuit and the third switch circuit according to the detection information of the first detection circuit, the second detection circuitand the third detection circuit. The system solves the problems that an existing WSN node self-powered system is low in solar energy utilization, is greatly influenced by weather and does not have a power management function.

Description

technical field [0001] The invention relates to the technical field of wireless sensors, in particular to a WSN node self-power supply system. Background technique [0002] Wireless sensor network (WSN) is a distributed sensor network that is widely used in people's daily work and life; traditional wireless sensor network nodes are usually equipped with energy storage devices to provide energy, but due to the limited capacity of energy storage devices, It is very inconvenient to replace or charge the energy storage device regularly; Chinese patent CN103259323A discloses a self-power supply system for WSN nodes based on solar-wind energy complementarity, which uses the principle of solar photovoltaic power generation and wind power generation to convert solar energy and wind energy into Electric energy, this design can automatically obtain external energy and prolong the power supply time and life of the energy storage device; however, the external energy obtained by the self...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/34H02J7/35G05F1/67
CPCH02J7/345H02J7/35G05F1/67Y02E10/56
Inventor 陈明霞张寒李徐勇姚金峰王晓文李顺艳
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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